Paper bags



(No Model.) Sheets-Sheet 1.

' E. STANLEY.

MACHINE FOR MAKING PAPER BAGS.

'Pte-nted Feb. 7,1882;

N PEIERs Fhnlwlilhngmphor. Washingmn. D c,

(No Model.) Q 2 Sheets-Sheet 2.

. E.- STANLEY. v MACHINE FOR MAKING PAIEB. BAGS. N0. 253,441. Q VPatented F6bl7'11'882.

fig /44 G/VlTNEEEES wZ f N. FEIERS. PhoiuLit-hogrlphur. Waxhingmn, n. c

g I UNITED STATES PATENT OFFICE.

EDWARD STANLEY, OF NE? YORK, N. Y., ASSIGNOR TO THE NATIONAL PAPER BAGCOMPANY, OF SAME PLACE.

MACHINE FORIMAKING PAPER BAGS.

SPECIFICATION forming part of Letters Patent No. 253,441, dated February'7, 1882.

- Application tiled October 21,1861. (No model.)

To alt'whom it may concern:

Be it known that I, EDWARD STANLEY, of the city of New York, in thecounty and State of New York, have invented certain new and usefulImprovements in Machines for Making Paper Bags of which the following isa specification.

M'y'invention relates to machines for making'paper bags from acontinuous web of paper. In such machines the paper is drawn forwardfrom a feed roller in a continuous web, and is first passed betweenfeed-rollers,which move it forward continuously; thence between tworollers, one of which carries in it a reciprocating knife for cuttingthepaper off into blanks of proper length to form bags; thence betweenfolders, which turn over or fold the sides of the blank so that theywill lap over each other to form the longitudinal seam thence 'between'apaste-box and adjacent roller, by which paste is applied to the end andthe flap at the bottom of the bag; and thence between other rollers,which turn over and press down theflap to close the bottoms of the bags,and which deliver the bags from the machine.

The present invention consists in certain improvements in theconstruction of the knife which cuts the belt or web of paper to formthe'blanks also,in an improved constructio'n ofthe roller in-which saidknife is carried, and of the roller which operates in combinationtherewith; also, in an improved combination of mechanism forreciprocating the paste-box, so that it will move at the same speed asthe bags to which the paste is being applied 5 also, in an improvedarrangement of a supportingplate, which holds the bags against thepasteroller carried by the paste-box; and, further, in an improvedcombination of mechanism for raising and lowering the aforesaidpaste-plate, and an elastic creasing-roller, against which a creasingknife or blade carried by the pastebox works, so that after paste hasbeen applied to the bottom portion of the bags and the bottom flaps havebeen creased the remaining or upperportion of the bags will move freelybetween the paste-roller and supportingplate without being pasted oracted upon by thecreasing knife or blade.

. In the accompanying drawings, Figure 1.

represents a longitudinal vertical section of my improved machine. Fig.2 represents a side view of the roller which rotatesin contact with theroller which carries the reciprocating knife for cutting the belt or webof paperinto blanks. Fig. 3 represents a partial longitudinal section ofsaid roller and its adjacentroller, between which the belt or web ofpaper passes. Fig. 4 represents an end view of said rollers and devicesfor moving the knife. Fig. 5 represents a plan of the complete knife.Fig. 6 represents a similar view of a portion thereof on a larger scale.Fig. 7 represents a side view of a portion of the knife on the samescale as Fig. 6. Fig. 8 represents a plan of a portion of the knife onthe same scale as Figs. 6 and 7. Fig. 9 represents a transverse sectionof the knife on the dotted line'm as, Fig. 7. Fig. 10 represents asimilar section of the knife on the dotted line 2/, Fig. 7. Fig. 11represents a plan of a portion of the paper belt or web, showing thelines on which it is out. Fig. 12 represents a plan of one of theblanks. Fig.

13 represents-a plan of a bag before, the bottom flap is closed over thebottom. Fig. 14 represents a longitudinal vertical section of thedelivery-end portion of the machine, including;

thepaste-box and all its appurtenances, andupon a larger scale than Fig.l. resents a transverse vertical section on the dotted line 2 2, Fig.14. Figs. 16 and 17' are detail views, hereinafter explained.

Similar letters of reference designate corresponding parts in all thefigures.

A designates the frame of the machine, and B designates a driving-shaft,to which motion may be communicated by a driving-beltpassing overpulleys thereon.

(J designates a roll of paper, and a designates the continuous belt orweb of paper drawn therefrom and passed around a roller, a, and thencebetween a pair of feed-rollers, b I), the first of which is rotatedpositively, and the second of which rotates by frictional contact withvthe web of paper.

Motion may be transmitted to the roller b in any suitable manneras, forexample, by ashaft extending transversely to the drivingshaft B and theroller b. After the paper is fed forward by the feed-rollers b b it iscarried Fig. 15 reprf'i between two rollers or cylinders, D D, whichrotatein contact with each other, and the latter of which carries aknife for dividing the web of paper transversely into blanks of properlength to form bags. The two rollers D D are geared together by wheels0, as seen in Fig. 3, and'upon the shaft of the lower roller, D, is agear-wheel, 0. Motion is transmitted to the lower roller, D, by means ofa gear-wheel, 0 on the main shaftB,and an intermediate wheel, a,engaging with the wheels 0 and c, as clearly seen in Fig. 1. Inunwinding the paper from the roll G itis found that the paper tends tocurveor curl upward after passing the rollers D D. \Vhen the roll 0 ofpaper is large in diameter the deflecting of the paper over the roller ais sufficient to take the curl out of the paper, but as the roll becomessmaller it is insuflicient to straighten the paper. To take this curveor curl out of the paper I form the lower roller, D, with projectingcircumferential heads (7, and the upper roller, D, with correspondingcircumferential grooves,'d,'and as the paper is passed between the tworollers it is slightly corrugated longitudinally near each edge by thebeads d and grooves d, and such corrugation tends to straighten thepaper and prevents the blanks, after being cut off by the knife carriedby the roller D, from curling up. These rollers, with their beads andcorresponding grooves, I regard as of great importance, as theyaccomplish effectively the straightening of'the paper, and they may beused in other machines for straightening a continuous belt or web ofpaper. The portions of the rollers D D on the outside of and between thebeads d and grooves d are cylindric and of uniform diameter.

I will now describe the construction of, the

knife which is carried in the upper roller, D,

and the means whereby it is operated. This knife is employed for cuttingthe belt or web of paper a transversely on thelines a, as seen in Fig.11, and it will be observed that the cuts a? are irregular, and theblanks a into which the paper is divided, have each a projecting flap,a, which, when the blank is folded on the lines a (see Fig. 12) so as tounite the side edges, is folded over the open bottom and pasted down toclose the bottom. It willbe understood that the length of the flap awill vary in bags of different sizes, and hence a knife having a bladeof different form must be used. The knife is represented in Figs. 5 to10, inclusive.

The stock of the knife is composed of a straight piece orbar,e, and acurved piece or bar, 6, attached thereto atboth ends. The straight pieceor bar e is cut away in the middle of its length on the under side, andthe piece 6 is slit longitudinally at each end, as seen in Fig. 7, so asto form two fingers or projections, 6 0 The upper fingers, 6 are firmlysecured to the piece 6 by screws 0 or otherwise, as seen in Figsi 6 and7 but the. lower fingers, 6 are bent farther inward, as seen in Figs. 6and 8,

and project under the cutaway portion of the piece 0 at each end of thepiece 6.

The blade of the knife is composed of three portions fffs The pieces orportionsfare soldered to the inner side of the stock-piece e at each endthereof, and the portion f is soldered to the stock-piece e, and isadapted to fit between thepiecesf. The manner in which the blade isfitted to the stock-pieces 06 is shown in Figs. 9 and 10. It will now beunderstood that the bending of thelower fingers, e", of the piece 0farther inward than the fingers e brings the portionsf andfof the bladeend to end and produces a continuous cutting-edge, which may be toothedor serrated, as seen in Fig. 7, if desired, toincrease itseffectiveness.

In order to produce blanks having flaps a of different lengths, Iprovide a single stockpiece, a, with sections f f of the bladepermanently fixed thereto, and as many pieces a, with attachedblade-sections f, as I desire to make sizes of bags. The pieces 0 areall of the same length from end to end; but their straight portions atthe ends are of different lengths, and consequently their middleportions, which are bowed outward from thepiece 6, will vary in lengthand are adapted to form flaps ofditi'erent lengths. The piece eshown inFig. 6 is bowed outward nearly to the ends, leaving only enough straightat the ends to fit on the piece 8', and hence it is adapted for cuttinga long flap. The piece 0 shown in Fig. 6i's adapted for cutting thelongest flap for the widest bag which it is desired to make, and thepiece 6 shown in Fig.8, and which is straight-fora greater distance fromthe ends, is designed to cut a shorter flap fora narrower bag.

It will be seen that the removable stock'- piece 6 is of greatadvantage, as it enables me to readily adapt the knife for bags'ofvarious widths.

The knife is fitted in a longitudinal slot in the upper roller, D, andis adapted to be reciprocated therein, so as to project beyond theperiphery thereof. Thelowerroller, D, is provided with a slot to receivethe edge of the knife shown in Fig. 2, and composed of narrow endportions,g g,andawide'r intermediate portion 9, which receives the bladeportion f of the knife, and which is as long as the piece 6 shown inFig. 6, and having the longest bowed or bent .portion. Hence nomodification of the roller is'necessary for knives of different sizes.

The knife stock e is provided at each end with a b1ock,f ,'and isconnected at the ends to two yokes, f, by means of screws or studs fwhich pass through the said yokes and enter the block f The yokes f 4are slotted, so as to receive the hubs on the ends of the roller D, and;are secured .on the ends of the roller D by the gibsf between which theyslide, as seen clearly in Fig.4. WVhen not otherwise actu ated the yokesare moved to draw the knife IIO within the periphery of the roller bymeans of springs f ",wh-iclr are secured ingrooves-imthe' periphery of;the roller, asseeniusliligtfi but springs might be-otherwise arrangedto: p=ro= duce the: same: result.

The yokes f are provided with. friction,- rollers f and as the roller Drotates, and-when the knife is: diametrically betweenathe two rollers Dand D theyokes are moved to'cause the knife .toprotrude from 'its slotandcnttt he paper-by meansofstationary cams f attached to parts'of theframe, and against which: the rollers. f b'ear. projected from: theroller at the: proper time, and is thenswithdrawn.

At the end: of the maehineat which the-pa; per-enters is a smallelevated table, A, upon which may be supported: apaste-bozc. for d e:liveringpaste upon: one longitudinal. edgeof thestrip-or: web ot'paper,so that when: the two edges are folded so as to'overlaptheywilrl bestuck together. As thispasti'ng'oftlielbngitudin al ed gesaforms no.-part ofimyiinverrtionr,

, I have nothereshown the appliancesafordoing;

ward? and fromieachlother;

posite sides of the blanks meet thesefoldersit. Afte1=-passing1tlrerollers D-D the blankswhich have? been: out off enter: hetweerrzai plateorplateIn-E,andanendless-belt, F.v (Shown elearly'inr Fig. 1".) The.belttF' is: carried by rollers F, to one of' which motion may liecommunicated by gearingt from the: drivingshafttB-,-or'in anyothersuitable manner; The

upp'erz or' carrying. part of the belt F passes over' aseriesi of:rollers, h, which areimou-nterl in stationary bearingsyan d' by them tlre; said upperipart of. the: beltis' pressed against the platemE,an'dlas the: friction between the belt an (l the paper :hlanksisgreater: than between said blanks and the platen or= plateE the blankswill becarriedrforward by the belt;..

I- may hererem'arkthat the; speedr of'itli'e be-lt F should hesligh tlygreater than'thescir; cum-ferential velocity of the rollers: D== Dflsofaster than the web of paper from wh ichl' theyare cut;

On eachsideof'the machine? are folders which are: spiral or twistedblades securedim idlyrina place, but. capable of adj ust'mentc tow When:thetwoop;

they are gradually turned up from-athorizonital position to a vertiealposition; and then-.inwardnponeach other, thusfoldin g: thehimnh on' thelines a Figs 12.

Over theroller F nearest the" delivery end of the machine, andoverfwhieh the belt E- passes, is a small stationary rolIer,:Il/:,n nderwhich: theblanhspass, and: which, in: connectioniwiththe'beltF, feedstlremforward until they escape from under it.

I will now describethe 'mecha'nism for' past-f ing the end of the-bagandifor creasingtheblan k preparatory to folding over the flap a(seeEigi; 12,) and'zwhich is best shown-in Figs; 14 and115; but also inFig. 1.

Hdesignates the paste-boigwhich ismouuted B this means the? knife. is

in a: movable carriage, H ,uw'hich:-' is adapterlito reici procarte alongr guides on slides El I designates a: shafttextending; transverselyacross the' machinesamll carrying-a gear-"wheel, I ,wh iolrengageswitlr-a-avheel;I 1 upon ashaft; 1?. The shaftll' -may. haverotary motion inrpa'rted to" itin any suitable: manner-as, for example,-byalshaftl extending from and transversely-to tlremairrdri-vin'gssh'afitB and bevel ge'aringt v Upon the shaft-I; are .twozcran ks, t, andJ'designates connecting-rods, by? which: the crau krpins; of the cranksare connected: with wrist.- pins or 'studs'ii projectingfromlthesideszot the carriage: H ,L as seen in Fig, F5,-

I'nv'the open throat of the: paste-box- H is a paste-roller, j andf upontherend of'theshaft of said? roller is zr-i 'atchet-wheel', j", (seen 1in Fig; 15;) wliich-.is adapted to: strike agailn-stiasta tionary pawlor arm"as:- the;- box: reciprocates, whereby a; fresh surface '0 fr t herol ler. is bron-gh t into use.

Upon: thewpaste-baxsflii sa-hl Me :or scraper; k, which m ayberadjusted: to ward an (1* from the rollerjxby meansiofi set serews+k.,--tocauseit's erl'gerto press with-moxie or: less-force upon.- the surface:ot'ztl're roller, a ml thereby, regulate the quantity of paste carriedontofi the box hythe rollerz:

Belowtheepaste box E isatshafe-K, mounted innstati'onary bearings; and;upon :1 this shaft: is secured aaaroller; Hand? immediately-below theshaft is-- another: shaft-,uM al soi mounted in toI-the'shaft-LKandksazid' roller-"L;- t'hati t-hezblanks' will be moved forwardaatrifleIf desired, the yokes I/ mawbeheldruponrth e endsof the: noller h. by;meansrof' g-ibs,-which formi gnidesror sliidewaysain-awhieh the yokes'l'may more freely. The t?wo'-yokes l are con nected: atttheiriendst'byasrwporting-plate;- Z for the ibags uso that bo th: yokes l are caused tomovearsimu ltaneously.

Upon= tlre-lowerlshaft, M, are-two: cams, N, placerlopppsite-theyokeslg-and: as said shaft is:rotated' tllesecamsr raise theyorhes l andthe supportin g pIateEL-Z" so asto raise the: latten'into contact withthe" paste rollerfj, on rather to cause-it to" press aebagzrup tiglrtly-azgai nstsai d rollerz Whentthe: y'okles liare-n'otl actedu-ponbythecamsN they 'arerdrawnuiown; or in the opposite direction;to movethe supportinge p'late lznearerith'e shaft Kgby-means'of a sprin g, It;whichrex'tends from one; yoke tothe other, a's iseenin' Fig; 15,1 and issecured in a groove, 1*, iIrtherOlI'eriLP From theahove it will beseen-that the pas-te boxH: is: moved forward withitsrolleej innmediatelyoverth'e: bottom-:portion of! thevbag, where itis desiredto:apply: the paste, and

When the movementof said paste-box brings the roller j immediately overthe plate l the latter, having been raised gradually by the action ofthe cams N on the yokes,reaehes its highest position and presses the bagagainst the roller j to deposit paste upon it. At this instant; however,the drop or let-off of the cams N passes the cam-shaped ends of theyokes l, and the yokes are drawn down by the springs 1 lowering theplate 1 away from the roller j. When the plate Z moves away from thepaste-roller j the bag might stick to the roller, and to prevent this Iem poya guard, m, which consists of a plate pivoted at n' and slotted soas to fit over the roller j. The bags pass underthis guard,and as soonas the plate Z moves away from the roller j'the guard m falls by its own.weight, assisted by a spring, 0, if desirable, and carries the bagdirectly away from the paste-roller.

Attached to the box H on the side opposite the blade or scraper 7c is acreasing .blade or knife, p, which may be adjusted downward by screws19, and in the yokes l just forward of theplate, L is mounted acreasing-roller, p composed of indie-rubber or other elastic material which issoft, and into which the blade or knife 10 may indent itself. When theyokes'l and the supporting-plate l are moved up, so also is thecreasing-roller p moved up against the blade or knife p, and therebyisthe bag creased at thejuncture of the flap a with the bag, so that thesaid flap will stand up at an angle of about forty -five degrees to thebag. The sudden movement of the plate 1 away from the paste-rollerjprevents the pastefrom being applied to too large a portion of the bag,and the roller L is of such small diameter that ample space is-leftbetween it and the paste-roller j for the passage of the bag forwardwhile the paste-box moves backward without any danger of pasting the bagbeyond its extreme lower or bottom portions.

In order to bring the paste-roller over the supporting-plate l atprecisely the right time, I preferably make the connectingrods Jadjustable in length, and this may be done by making them in two piecesconnected bya:

screw-threaded sleeve andjam-nuts, as clearly seen in Fig. 14. After thebagis released from between the paste-rollerj and the plate l and hasbeen creased, it is still held between the small roller h and thetraveling endless belt t F, and said roller and belt do not releasetheir hold upon the bag until itenters between pressing-rollers O O, theformer of which may be rotated positively by any suitable gearing fromsome other shaft of the machine, and the latter of which rotates byfrictional contact with the bags. These pressingrollers 0 0 press thefiapwdown upon the pasted portion of the bag and complete all theoperations of making the bag, and before the bag leaves the rollers O 0it enters between two rollers, PP, which again press it and aid insmoothing and finishing the bags. The lower roller, P, is rotatedpositively, while the upper roller, P", ro-

tates by frictional contact with the bag.

From the final pressing-rollers P P the bags are delivered into a box orother suitable receptacle and are tied together in bundles, after whichthey only require to be dried to prepare them for sale.

What I claim as my invention, and desire to secure by Letters Patent,is-

1. Aknifefor apaper-bag machine, composed of a straight stock-piece, abowed stock-piece detachably secured thereto, and a sectional blade,substantially as herein specified.

2. Aknife forapaper-bagmachine,composed of a straight stock-piece cutaway upon the under side, 'a bowed stock-piece slitted at each end toform two fingers, the upper of which are detachably secured to thestraight stockpieee, and the lower of which lap under the same, and thesectional blade, substantially as herein specified.

3. The combination, with the roller D and the reciprocating knifecarried thereby, and composed of the main stock-piece eand bladesectionsf, and the removable stock-piece c and blade-sectionf, of the roller D,having a slot com posed of the narrow end portions, 9, and the widerintermediate portion, 9, substantially as herein specified.

4. In a paper-bag machine, the combination of two rollers, between whichthe paper passes, having circumferential beads and corresponding groovesnear each end, and having the portions on the outer sides of and betweensaid beads and grooves of cylindric form and uniform diameter, and areciprocating knife carried in one of said rollers, substantially asherein specified.

5. In a paper-bag machine, the combination of a paste-box, areciprocating carriage-sup porting said box, and guides therefor, and acrank-shaft and a connecting rod or rods for operating said carriage,substantially as herein specified.

6. In a paper-bag machine, the combination of a paste-box, a plate forsupporting bags while paste is being applied, a shaft with which saidplate rotates, and mechanism, substantially as described, for movingsaid plate toward and from the center of the shaft, substantially asherein specified. 7. In a paper-bag machine, the combination of acreasing blade or knife, an elastic creasin g-roller, a shaft with whichsaid roller rotates, and mechanism, substantially as described, formoving said roller toward and from said shaft, substantially as hereinspecified.

8. In a paper-bag machine, the combination of a paste-box, a creasingknife or blade, a plate for supportingthe bags while paste is beingapplied, an elastic creasing-roller, a shaft with which said plate andcreasing-roller rotate, and mechanism, substantially as described, formoving said plate and roller toward and from said shaft, substantiallyas herein specified.

IIO

9. In a paper-bag machine, the combination creasing blade or knife 1),the plate 1 the slidof a reciprocating paste-box, a plate for snpingyokes l, the elastic creasing-roller p and. I0 pgrting gags while pasteis being applied, a the cams N, substantially as herein specified. s aftwit which said plate rotates yokes to 5 which said plate is attached,and eams for mov EDWARD STANLEY ing said yokes and plate from the centerof Witnesses: said shaft, substantially as herein specified. FREDK.HAYNES,

10. The combination of the paste-box H, the EDWARD GLATZMAYER.

